DE2921795C2 - - Google Patents

Info

Publication number
DE2921795C2
DE2921795C2 DE2921795A DE2921795A DE2921795C2 DE 2921795 C2 DE2921795 C2 DE 2921795C2 DE 2921795 A DE2921795 A DE 2921795A DE 2921795 A DE2921795 A DE 2921795A DE 2921795 C2 DE2921795 C2 DE 2921795C2
Authority
DE
Germany
Prior art keywords
dryer
polycarbonate
powder
polycarbonate powder
stirrer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE2921795A
Other languages
German (de)
English (en)
Other versions
DE2921795A1 (de
Inventor
Gabriele Renazzo Ferrara It Govoni
Roberto Ferrara It Flammini
Remo Poggio Renatico Ferrara It Vaccari
Pier Luigi Dr. Ferrara It Guardigli
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Montedison SpA
Original Assignee
Montedison SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Montedison SpA filed Critical Montedison SpA
Publication of DE2921795A1 publication Critical patent/DE2921795A1/de
Application granted granted Critical
Publication of DE2921795C2 publication Critical patent/DE2921795C2/de
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/12—Powdering or granulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/18—Stationary reactors having moving elements inside
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • B29B13/06—Conditioning or physical treatment of the material to be shaped by drying
    • B29B13/065—Conditioning or physical treatment of the material to be shaped by drying of powder or pellets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
    • B01J2219/00087—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements outside the reactor
    • B01J2219/00094—Jackets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/18—Details relating to the spatial orientation of the reactor
    • B01J2219/185—Details relating to the spatial orientation of the reactor vertical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2069/00—Use of PC, i.e. polycarbonates or derivatives thereof, as moulding material
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2369/00—Characterised by the use of polycarbonates; Derivatives of polycarbonates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Polyesters Or Polycarbonates (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
DE19792921795 1978-05-29 1979-05-29 Kontinuierliches verfahren und vorrichtung zur herstellung von koernigen polycarbonaten Granted DE2921795A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT23924/78A IT1094859B (it) 1978-05-29 1978-05-29 Processo per l'ottenimento di policarbonato granulare

Publications (2)

Publication Number Publication Date
DE2921795A1 DE2921795A1 (de) 1979-12-06
DE2921795C2 true DE2921795C2 (fr) 1993-03-18

Family

ID=11210907

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19792921795 Granted DE2921795A1 (de) 1978-05-29 1979-05-29 Kontinuierliches verfahren und vorrichtung zur herstellung von koernigen polycarbonaten

Country Status (8)

Country Link
US (1) US4252968A (fr)
JP (1) JPS54156060A (fr)
BE (1) BE876577A (fr)
DE (1) DE2921795A1 (fr)
FR (1) FR2427349A1 (fr)
GB (1) GB2022600B (fr)
IT (1) IT1094859B (fr)
NL (1) NL7904152A (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4372758A (en) * 1980-09-02 1983-02-08 Union Carbide Corporation Degassing process for removing unpolymerized monomers from olefin polymers
US4451593A (en) * 1981-03-31 1984-05-29 Union Carbide Corporation Process for finishing resin using reduced energy input
US4845193A (en) * 1987-07-21 1989-07-04 Mitsubishi Gas Chemical Co., Inc. Process for producing polycarbonate resin molding material having low particle content with vented extruder
DE3829293A1 (de) * 1988-08-30 1990-03-15 Bayer Ag Verfahren zur erniedrigung der schmelzviskositaet von aromatischen polycarbonaten, aromatischen polyestercarbonaten, aromatischen und/oder araliphatischen polyestern
US5187256A (en) * 1990-12-03 1993-02-16 The Dow Chemical Company Uniform distribution polycarbonate pellet
DE10014030A1 (de) * 2000-03-22 2001-09-27 Bayer Ag Verfahren zur Verbesserung der Adhäsionsstabilität der Oberfläche von Kunststoffformteilen
EP2539373B1 (fr) * 2010-02-24 2019-09-25 Univation Technologies, LLC Appareil et procédés pour la séparation de corps volatils à partir de particules
US9126353B2 (en) * 2010-11-03 2015-09-08 Ineos Olefins & Polymers Usa Method and apparatus for making polyolefin pellets

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE584333C (de) * 1932-04-13 1933-09-18 Jens Karl Ferdinand Rannje Vorrichtung zum Mischen pulverfoermiger Trockenstoffe
DE1057977B (de) * 1939-06-28 1959-05-21 Keller G M B H Siebbodentrockner fuer vorwiegend nicht rieselfaehiges Gut
DE1038885B (de) * 1953-09-09 1958-09-11 Wilhelm Lang K G Mechanischer Umlaufmischer fuer trockene Stoffe mit vertikal angeordneter Mischerwelle
JPS5125377B1 (fr) * 1967-08-23 1976-07-30
US3547890A (en) * 1967-08-23 1970-12-15 Teijin Ltd Process and apparatus for drying polyester particles
US3495341A (en) * 1968-04-09 1970-02-17 Allied Chem Continuous process for surface drying polymer chips and enclosed apparatus
DE2352426A1 (de) * 1973-10-19 1975-04-30 Metallgesellschaft Ag Verfahren zur verhinderung der agglomeration und des zusammenklebens von amorphen kunststoffgranulaten
DE2558730C3 (de) * 1975-12-24 1982-04-22 Hoechst Ag, 6000 Frankfurt Verfahren zum Kristallisieren und Trocknen von Polyethylenterephthalat und Vorrichtung zur Durchführung des Verfahrens

Also Published As

Publication number Publication date
JPS54156060A (en) 1979-12-08
JPS6226887B2 (fr) 1987-06-11
FR2427349B1 (fr) 1983-01-14
US4252968A (en) 1981-02-24
IT1094859B (it) 1985-08-10
GB2022600A (en) 1979-12-19
NL7904152A (nl) 1979-12-03
BE876577A (fr) 1979-11-28
DE2921795A1 (de) 1979-12-06
IT7823924A0 (it) 1978-05-29
GB2022600B (en) 1982-12-08
FR2427349A1 (fr) 1979-12-28

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
8125 Change of the main classification

Ipc: C08L 69/00

D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee